Jesse j



UNITED STATES PATENT OFFICE.

JESSE J. GILBERT, OF NEW YORK, N. Y.

DETERGENT.

SPECIFICATION forming part of Letters Patent No. 429,435, dated June 3,1890.

Application filed September 9, 1889. Serial No. 323,454. (Specimens) Toall whom it may concern.-

Be it known that I, JESSE J. GILBERT, a citizen of the United States,residing in the city of New York, county and State of New York, haveinvented certain new and useful Im+ provements in Compounds for CleaningMarble and other Stone, of which the following is such a full, clear,concise, and exact description as will enable others skilled in the artto which my invention appertains to make and use the same.

My invention relates to composition particularly adapted for cleaningmarble, but which may also be used upon other stones-as, for example,slate and blue-stone-my object being ,to provide a cleansing compoundwhich will remove dirt and stains and restore the original color andpolish.

In preparing my compound I take six pounds of muriatic acid, with whichI mix one pound of borax and one pound of soapstone finely powdered. Tothis may also he added two ounces of alum and two ounces ofsal-ammoniac. Theproportionsmaybesomewhat varied, what I consideressential being the mixture of the muriatic acid with the borax andsoapstone. The compound can be applied with an ordinary scrubbing-brush,

and dirt, stains, and discolorations will rap idly disappear. Very roughportions of the stone to be cleaned may be smoothed down and polishedindependently with pumicestone, and a little powdered pumice-stone maybe added to the mixture itself, if desired. I have also found thatmarble cleaned with my compound retains its color better and will notturn yellow, as it is apt to when the ordinary cleaning compounds areused.

Having now described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

1. The herein-described compound for cleaning marble, &c., consisting ofa mixture of muriaticacid, borax, and soapstone, substantially in theproportions hereinbefore set forth, and for the purpose specified.

2. The herein-described compound for cleaning marble, &c., consisting ofa mixture of muriatic acid, borax, soapstone, alum, and

sal-ammoniac, substantially in the proportions hereinbefore set forth,and for the purpose specified.

JESSE T. GILBERT.

WVitnesses:

WM. N. STRONG, R. G. MONROE.

